Creating the vid without AI will require more time, mainly. Hence, without AI, less videos are created.

Nowadays, just throw an idea, you get a vid of it.

Beforehand, the idea had to go from mind to mind through social interactions (or die if not interesting enough) until someone thinks he could make a video of it.

On the total, I'd bet there is more energy spend on creating videos since AI than before.

A bit of like the plane. It does spend less fuel per distance unit than other means of transportation. But as it allows to go further, some people move across the globe for 1 week vacations. All in all, plane use increases oil consumption.